Ruby - Methods
You want to create two Ruby methods: one that checks if an array is empty, and another that empties the array. Which method names follow Ruby conventions?
You want to create two Ruby methods: one that checks if an array is empty, and another that empties the array. Which method names follow Ruby conventions?
hard📝 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Identify predicate method naming
Methods that check a condition should end with?, soempty?is correct.Step 2: Identify mutating method naming
Methods that modify the object should end with!, soclear!is correct.Step 3: Evaluate options
empty? and clear! correctly usesempty?andclear!. Other options misuse suffixes or use non-conventional names.Final Answer:
empty? and clear! -> Option DQuick Check:
Predicate ends with ?, mutator ends with ! [OK]
Quick Trick: Check methods end with ?, mutators with ! [OK]
Common Mistakes:
- Swapping ? and ! suffixes
- Using non-conventional method names
- Omitting suffixes for predicate or mutator methods
Master "Methods" in Ruby
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